The former/closure is a perfect partner for all new-build and house extension Windows and Doors. Made to your sizes, you then have an aperture which is guaranteed, there is no need to visit the site to re-measure or conduct surveys for your Window and Door. The former is positioned in situ with brick and block work built and tied around it, the windows and doors are then installed later. Never have to make a timber former again only to removed and dispose of it then install a cavity closer damp course, all this is done with one simple product. This also simplifies the process of brick laying, gives you the perfect window and door aperture sizes for ordering glazing ahead of finish and simplifies fitting, you have a perfect fit every time.

Cavity Former / Closer features;

  • Thermal performance complies with Part L of the building regulations
  • Works with timber frame, brick or block work construction
  • Windows can be fitted from the inside or outside
  • Head vent for overhead ventilation option to Approved Document F
  • Designed for upto a 150mm cavity
  • Acts as a horizontal and vertical damp proof course
  • Can be used with all PVC-U, Aluminium or timber systems glazing